here's a few renders straight out of Carrara that might be of interest to someone - (well all but one - the top middle one is toon pro overlaying the first image on the top left)

- the water colour effect is obtained by doing a photon pass- and at least one of them has caustics turned on - the dark lines courtsey of toonpro! ( a carrara add on plugin)

the one with the most lines - the obj was bought in facetted/.???? and ended up as a primitive ??? I think that's what happened - then when I converted to mesh it lost all those lines (the ones that demark the tri gons) - shader image attached - the shader uses easy Fresnel by shoe string shaders

here's some poser robots for the Carrara toon challange - I rendered out an occlusion pass, a shadow pass , and a toonpro pass - I dirted up the shadow pass in fotosketcher - then combined them - uses parameter Darker Colour

Very interesting effects. The robots are cool, but those sketchy lines on the swirly shape are really facinating.